Orca flat review on linux is not restricted to the current window

I am not sure this is a real issue or it's imposed by the QT gui paradigm. I even have no steps to reproduce here.
On linux the major screen reader for graphical desktop orca has a feature called flat review. It allows reviewing screen content in a 2D representation. It allows blind individuals to browse the text shown on the screen by lines, words and even by characters.
With GTK apps while using flat review the content is usually restricted to the currently showing window or child window.
With QT apps this is not currently honoured. While using flat review inside a dialog window the flat review contains content from the parent windows from the same application.
Is this a good candidate for a feature request?